tif_tile.c File Reference

#include <precomp.h>

Include dependency graph for tif_tile.c:

Go to the source code of this file.

Functions
uint32	TIFFComputeTile (TIFF *tif, uint32 x, uint32 y, uint32 z, uint16 s)
int	TIFFCheckTile (TIFF *tif, uint32 x, uint32 y, uint32 z, uint16 s)
uint32	TIFFNumberOfTiles (TIFF *tif)
uint64	TIFFTileRowSize64 (TIFF *tif)
tmsize_t	TIFFTileRowSize (TIFF *tif)
uint64	TIFFVTileSize64 (TIFF *tif, uint32 nrows)
tmsize_t	TIFFVTileSize (TIFF *tif, uint32 nrows)
uint64	TIFFTileSize64 (TIFF *tif)
tmsize_t	TIFFTileSize (TIFF *tif)
void	TIFFDefaultTileSize (TIFF *tif, uint32 *tw, uint32 *th)
void	_TIFFDefaultTileSize (TIFF *tif, uint32 *tw, uint32 *th)

Function Documentation

_TIFFDefaultTileSize()

void _TIFFDefaultTileSize	(	TIFF *	tif,
		uint32 *	tw,
		uint32 *	th
	)

Definition at line 278 of file tif_tile.c.

{
    (void) tif;
    if (*(int32*) tw < 1)
        *tw = 256;
    if (*(int32*) th < 1)
        *th = 256;
    /* roundup to a multiple of 16 per the spec */
    if (*tw & 0xf)
        *tw = TIFFroundup_32(*tw, 16);
    if (*th & 0xf)
        *th = TIFFroundup_32(*th, 16);
}

Referenced by _TIFFSetDefaultCompressionState().

TIFFCheckTile()

int TIFFCheckTile	(	TIFF *	tif,
		uint32	x,
		uint32	y,
		uint32	z,
		uint16	s
	)

Definition at line 73 of file tif_tile.c.

{
    TIFFDirectory *td = &tif->tif_dir;
 
    if (x >= td->td_imagewidth) {
        TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
                 "%lu: Col out of range, max %lu",
                 (unsigned long) x,
                 (unsigned long) (td->td_imagewidth - 1));
        return (0);
    }
    if (y >= td->td_imagelength) {
        TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
                 "%lu: Row out of range, max %lu",
                 (unsigned long) y,
                 (unsigned long) (td->td_imagelength - 1));
        return (0);
    }
    if (z >= td->td_imagedepth) {
        TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
                 "%lu: Depth out of range, max %lu",
                 (unsigned long) z,
                 (unsigned long) (td->td_imagedepth - 1));
        return (0);
    }
    if (td->td_planarconfig == PLANARCONFIG_SEPARATE &&
        s >= td->td_samplesperpixel) {
        TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
                 "%lu: Sample out of range, max %lu",
                 (unsigned long) s,
                 (unsigned long) (td->td_samplesperpixel - 1));
        return (0);
    }
    return (1);
}

Referenced by _TIFFReadTileAndAllocBuffer(), TIFFReadTile(), and TIFFWriteTile().

TIFFComputeTile()

uint32 TIFFComputeTile	(	TIFF *	tif,
		uint32	x,
		uint32	y,
		uint32	z,
		uint16	s
	)

Definition at line 36 of file tif_tile.c.

{
    TIFFDirectory *td = &tif->tif_dir;
    uint32 dx = td->td_tilewidth;
    uint32 dy = td->td_tilelength;
    uint32 dz = td->td_tiledepth;
    uint32 tile = 1;
 
    if (td->td_imagedepth == 1)
        z = 0;
    if (dx == (uint32) -1)
        dx = td->td_imagewidth;
    if (dy == (uint32) -1)
        dy = td->td_imagelength;
    if (dz == (uint32) -1)
        dz = td->td_imagedepth;
    if (dx != 0 && dy != 0 && dz != 0) {
        uint32 xpt = TIFFhowmany_32(td->td_imagewidth, dx);
        uint32 ypt = TIFFhowmany_32(td->td_imagelength, dy);
        uint32 zpt = TIFFhowmany_32(td->td_imagedepth, dz);
 
        if (td->td_planarconfig == PLANARCONFIG_SEPARATE) 
            tile = (xpt*ypt*zpt)*s +
                 (xpt*ypt)*(z/dz) +
                 xpt*(y/dy) +
                 x/dx;
        else
            tile = (xpt*ypt)*(z/dz) + xpt*(y/dy) + x/dx;
    }
    return (tile);
}

Referenced by _TIFFReadTileAndAllocBuffer(), TIFFReadTile(), and TIFFWriteTile().

TIFFDefaultTileSize()

void TIFFDefaultTileSize	(	TIFF *	tif,
		uint32 *	tw,
		uint32 *	th
	)

Definition at line 272 of file tif_tile.c.

{
    (*tif->tif_deftilesize)(tif, tw, th);
}

TIFFNumberOfTiles()

uint32 TIFFNumberOfTiles

(

TIFF *

tif

)

Definition at line 113 of file tif_tile.c.

{
    TIFFDirectory *td = &tif->tif_dir;
    uint32 dx = td->td_tilewidth;
    uint32 dy = td->td_tilelength;
    uint32 dz = td->td_tiledepth;
    uint32 ntiles;
 
    if (dx == (uint32) -1)
        dx = td->td_imagewidth;
    if (dy == (uint32) -1)
        dy = td->td_imagelength;
    if (dz == (uint32) -1)
        dz = td->td_imagedepth;
    ntiles = (dx == 0 || dy == 0 || dz == 0) ? 0 :
        _TIFFMultiply32(tif, _TIFFMultiply32(tif, TIFFhowmany_32(td->td_imagewidth, dx),
        TIFFhowmany_32(td->td_imagelength, dy),
        "TIFFNumberOfTiles"),
        TIFFhowmany_32(td->td_imagedepth, dz), "TIFFNumberOfTiles");
    if (td->td_planarconfig == PLANARCONFIG_SEPARATE)
        ntiles = _TIFFMultiply32(tif, ntiles, td->td_samplesperpixel,
            "TIFFNumberOfTiles");
    return (ntiles);
}

Referenced by TIFFReadDirectory(), and TIFFSetupStrips().

TIFFTileRowSize()

tmsize_t TIFFTileRowSize

(

TIFF *

tif

)

Definition at line 180 of file tif_tile.c.

{
    static const char module[] = "TIFFTileRowSize";
    uint64 m;
    m=TIFFTileRowSize64(tif);
    return _TIFFCastUInt64ToSSize(tif, m, module);
}

Referenced by gtTileContig(), gtTileSeparate(), and PredictorSetup().

TIFFTileRowSize64()

uint64 TIFFTileRowSize64

(

TIFF *

tif

)

Definition at line 142 of file tif_tile.c.

{
        static const char module[] = "TIFFTileRowSize64";
    TIFFDirectory *td = &tif->tif_dir;
    uint64 rowsize;
    uint64 tilerowsize;
 
    if (td->td_tilelength == 0)
        {
                TIFFErrorExt(tif->tif_clientdata,module,"Tile length is zero");
                return 0;
        }
        if (td->td_tilewidth == 0)
        {
                TIFFErrorExt(tif->tif_clientdata,module,"Tile width is zero");
        return (0);
        }
    rowsize = _TIFFMultiply64(tif, td->td_bitspersample, td->td_tilewidth,
        "TIFFTileRowSize");
    if (td->td_planarconfig == PLANARCONFIG_CONTIG)
        {
                if (td->td_samplesperpixel == 0)
                {
                        TIFFErrorExt(tif->tif_clientdata,module,"Samples per pixel is zero");
                        return 0;
                }
        rowsize = _TIFFMultiply64(tif, rowsize, td->td_samplesperpixel,
            "TIFFTileRowSize");
        }
        tilerowsize=TIFFhowmany8_64(rowsize);
        if (tilerowsize == 0)
        {
                TIFFErrorExt(tif->tif_clientdata,module,"Computed tile row size is zero");
                return 0;
        }
    return (tilerowsize);
}

Referenced by TIFFTileRowSize(), and TIFFVTileSize64().

TIFFTileSize()

tmsize_t TIFFTileSize

(

TIFF *

tif

)

Definition at line 257 of file tif_tile.c.

{
    static const char module[] = "TIFFTileSize";
    uint64 m;
    m=TIFFTileSize64(tif);
    return _TIFFCastUInt64ToSSize(tif, m, module);
}

Referenced by gtTileContig(), gtTileSeparate(), TIFFFillTile(), TIFFReadDirectory(), and TIFFWriteCheck().

TIFFTileSize64()

uint64 TIFFTileSize64

(

TIFF *

tif

)

Definition at line 252 of file tif_tile.c.

{
    return (TIFFVTileSize64(tif, tif->tif_dir.td_tilelength));
}

Referenced by _TIFFRewriteField(), EstimateStripByteCounts(), TIFFTileSize(), and TIFFWriteDirectoryTagLongLong8Array().

TIFFVTileSize()

tmsize_t TIFFVTileSize	(	TIFF *	tif,
		uint32	nrows
	)

Definition at line 240 of file tif_tile.c.

{
    static const char module[] = "TIFFVTileSize";
    uint64 m;
    m=TIFFVTileSize64(tif,nrows);
    return _TIFFCastUInt64ToSSize(tif, m, module);
}

TIFFVTileSize64()

uint64 TIFFVTileSize64	(	TIFF *	tif,
		uint32	nrows
	)

Definition at line 192 of file tif_tile.c.

{
    static const char module[] = "TIFFVTileSize64";
    TIFFDirectory *td = &tif->tif_dir;
    if (td->td_tilelength == 0 || td->td_tilewidth == 0 ||
        td->td_tiledepth == 0)
        return (0);
    if ((td->td_planarconfig==PLANARCONFIG_CONTIG)&&
        (td->td_photometric==PHOTOMETRIC_YCBCR)&&
        (td->td_samplesperpixel==3)&&
        (!isUpSampled(tif)))
    {
        /*
         * Packed YCbCr data contain one Cb+Cr for every
         * HorizontalSampling*VerticalSampling Y values.
         * Must also roundup width and height when calculating
         * since images that are not a multiple of the
         * horizontal/vertical subsampling area include
         * YCbCr data for the extended image.
         */
        uint16 ycbcrsubsampling[2];
        uint16 samplingblock_samples;
        uint32 samplingblocks_hor;
        uint32 samplingblocks_ver;
        uint64 samplingrow_samples;
        uint64 samplingrow_size;
        TIFFGetFieldDefaulted(tif,TIFFTAG_YCBCRSUBSAMPLING,ycbcrsubsampling+0,
            ycbcrsubsampling+1);
        if ((ycbcrsubsampling[0] != 1 && ycbcrsubsampling[0] != 2 && ycbcrsubsampling[0] != 4)
            ||(ycbcrsubsampling[1] != 1 && ycbcrsubsampling[1] != 2 && ycbcrsubsampling[1] != 4))
        {
            TIFFErrorExt(tif->tif_clientdata,module,
                     "Invalid YCbCr subsampling (%dx%d)", 
                     ycbcrsubsampling[0], 
                     ycbcrsubsampling[1] );
            return 0;
        }
        samplingblock_samples=ycbcrsubsampling[0]*ycbcrsubsampling[1]+2;
        samplingblocks_hor=TIFFhowmany_32(td->td_tilewidth,ycbcrsubsampling[0]);
        samplingblocks_ver=TIFFhowmany_32(nrows,ycbcrsubsampling[1]);
        samplingrow_samples=_TIFFMultiply64(tif,samplingblocks_hor,samplingblock_samples,module);
        samplingrow_size=TIFFhowmany8_64(_TIFFMultiply64(tif,samplingrow_samples,td->td_bitspersample,module));
        return(_TIFFMultiply64(tif,samplingrow_size,samplingblocks_ver,module));
    }
    else
        return(_TIFFMultiply64(tif,nrows,TIFFTileRowSize64(tif),module));
}

Referenced by ChopUpSingleUncompressedStrip(), TIFFTileSize64(), and TIFFVTileSize().